// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// This file is part of CodingEditor.
// Note:	This project is derived from Peter Project
//			(hosted on sourceforge and codeplex)
//
// Copyright (c) 2008-2009, CE Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


namespace CE.Classes
{
    using System.Collections.Generic;

	using ICSharpCode.TextEditor.Document;

	/// <summary>
	/// Description of CodeFoldingStrategy.
	/// </summary>
	public class CodeFoldingStrategy : IFoldingStrategy
	{
		#region Methods

		public List<FoldMarker> GenerateFoldMarkers(IDocument document, string fileName, object parseInformation)
		{
			// This is a simple folding strategy.
			// It searches for matching brackets ('{', '}') and creates folds
			// for each region.

			List<FoldMarker> foldMarkers = new List<FoldMarker>();
			for (int offset = 0; offset < document.TextLength; ++offset) {
				char c = document.GetCharAt(offset);
				if (c == '{') {
					int offsetOfClosingBracket = document.FormattingStrategy.SearchBracketForward(document, offset + 1, '{', '}');
					if (offsetOfClosingBracket > 0) {
						int length = offsetOfClosingBracket - offset + 1;
						foldMarkers.Add(new FoldMarker(document, offset, length, "{...}", false));
					}
				}
			}
			return foldMarkers;
		}

		#endregion Methods
	}
}